51345193 has 4 divisors (see below), whose sum is σ = 51614208. Its totient is φ = 51076180.

The previous prime is 51345169. The next prime is 51345199. The reversal of 51345193 is 39154315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51345193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51345199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134221 + ... + 134602.

It is an arithmetic number, because the mean of its divisors is an integer number (12903552).

Almost surely, 2^51345193 is an apocalyptic number.

It is an amenable number.

51345193 is a deficient number, since it is larger than the sum of its proper divisors (269015).

51345193 is a wasteful number, since it uses less digits than its factorization.

51345193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269014.

The product of its digits is 8100, while the sum is 31.

The square root of 51345193 is about 7165.5560147137. The cubic root of 51345193 is about 371.6777786521.

The spelling of 51345193 in words is "fifty-one million, three hundred forty-five thousand, one hundred ninety-three".